Which of the following is not a part of dewatering process?
(a) Drying bed
(b) Air flotation
(c) Vacuum filter
(d) Drying lagoon
The question was asked by my school teacher while I was bunking the class.
Query is from Sludge Thickening, Sludge Dewatering topic in section Sewage Filtration and Activated Sludge Process of Environmental Engineering